Fig 12. Gate Charge Test Circuit & Waveform
VGS
Same Type
50KΩ
as DUT
Qg
12V
200nF
10V
300nF
VDS
VGS
Qgs
Qgd
DUT
3mA
Charge
Fig 13. Resistive Switching Test Circuit & Waveforms
RL
VDS
90%
VDS
VDD
( 0.5 rated VDS
)
RG
10%
Vin
DUT
10V
td(on)
tr
td(off)
tf
ton
toff
Fig 14. Unclamped Inductive Switching Test Circuit & Waveforms
BVDSS
--------------------
BVDSS -- VDD
L
1
2
2
----
EAS
=
LL IAS
VDS
VDD
BVDSS
IAS
ID
RG
ID (t)
VDD
VDS (t)
DUT
10V
t p
Time
◎ SEMIHOW REV.A0,Nov 2007